Add Portainer docker-compose configuration

- Web UI for Docker container management
- Bound to localhost (reverse proxy recommended)
- Uses named volume for persistent data
- Configured for Europe/Budapest timezone
- Resource limits and health checks included

config/docker/portainer/docker-compose.yml

@@ -0,0 +1,50 @@
+# Portainer Docker Compose Configuration
+# Deploy with: sudo mkdir -p /opt/docker/portainer && sudo cp config/docker/portainer/docker-compose.yml /opt/docker/portainer/
+# Start with: cd /opt/docker/portainer && sudo docker-compose up -d
+
+# PORTAINER CONFIGURATION
+# - Web UI for Docker container management
+# - Bound to localhost only (reverse proxy recommended)
+# - Persistent data storage in named volume
+
+services:
+  portainer:
+    image: portainer/portainer-ce:latest
+    container_name: portainer
+    restart: unless-stopped
+
+    # Environment
+    environment:
+      - TZ=Europe/Budapest
+
+    # Network - bind to localhost for security
+    ports:
+      - "127.0.0.1:9000:9000"  # Web UI (reverse proxy only)
+
+    # Volume mounts
+    volumes:
+      # Docker socket for container management
+      - /var/run/docker.sock:/var/run/docker.sock
+      # Portainer data
+      - portainer_data:/data
+
+    # Resource limits
+    deploy:
+      resources:
+        limits:
+          cpus: '0.5'
+          memory: 512M
+        reservations:
+          cpus: '0.1'
+          memory: 128M
+
+    # Health check
+    healthcheck:
+      test: ["CMD", "wget", "--no-verbose", "--tries=1", "--spider", "http://localhost:9000/api/status"]
+      interval: 30s
+      timeout: 10s
+      retries: 3
+      start_period: 30s
+
+volumes:
+  portainer_data: